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Green Science Book -- LBSS
Chesapeake Bay Watershed
91
Science
7th Grade
01/14/2012

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Cards

Term
biome
Definition
ecosystems with similar plants, animals, soil climate
Term
tundra
Definition
60-70N, -50-80c, permafrost, cold, dry, lichen, arctic fox
Term
evergreen forest
Definition
50-60N, -40-20c, wildfires, forest, needles, ermine, snowshoe rabbit
Term
temperate deciduous forest
Definition
34-50N/S, -30-30C, changing seasons, loses leaves, broadleaf forests to captures sun, white tailed deer and rattlesnake
Term
desert
Definition
18-35N/S, 18-50C, rocky sandy soil, little plant life, cactus and joshura tree, vulture and fox
Term
marine biome
Definition
open ocen, seashore, greatly varied temperature, high salinity, very productive, seaweed, kelp
Term
freshwater biome
Definition
streams, lakes, rivers, greatly varied temperature, little salt but nutrients, lilly pads, fish
Term
adaptation
Definition
behavioral or physical changes an organism makes to be more successful in its biome
Term
hibernation
Definition
the state an organism enters which slows all metabolic functions to near minimum for an extended period
Term
migration
Definition
movement of an organism, typically a long distance, in response to changes its environment
Term
dormancy
Definition
A period in an organism's life cycle when growth, development, and activity are temporarily stopped
Term
climate
Definition
general weather pattern of an area
Term
gravity
Definition
pulls everything toward the surface, including air
Term
temperature
Definition
varies with intensity of sunlight
Term
precipitation
Definition
amount of rain, snow, sleet etc an area receives
Term
abiotic
Definition
non-living chemical and physical factors that affect ecosystems (light, temperature, water quality, soil, pressure)
Term
biotic
Definition
living things that shape an organism (producers, consumers, decomposers)
Term
community
Definition
a group of organisms sharing an ecosystem--close enough to interact
Term
ecosystem
Definition
a complex set of relationships, made up of all organisms, abiotic and biotic components of their environment
Term
food chain
Definition
a linked sequence in a food web that starts with something that eats nothing else and ends with something that is not eaten by anything else
Term
food web
Definition
shows the feeding connections in an ecological community
Term
habitat
Definition
the area inhabited by a particular species of plant or animal
Term
limiting factor
Definition
the factor that ultimately controls a population growth--can be biotic or abiotic. only one for any particular place or time at once
Term
population
Definition
a count of all the organisms that belong to the same species and live in the same area
Term
predator-prey interaction
Definition
a hunting organism that feeds on an attacked organism
Term
water quality
Definition
made up of the abiotic characteristics of water--temperature, dissolved O2, pH, conductivity, nitrate, etc
Term
dissolved oxygen
Definition
affected by moving water, temperature, photosynthesis, algae bloom. the most important abiotic factor for water quality
Term
pH
Definition
a measure of liquid acidity--lower = more acid. lowered by decomposition or respiration, increased by mineral content and photosynthesis. 6.5-8.2 best for fish and other organisms
Term
respiration
Definition
the act of taking in oxygen and carbohydrates and releasing carbon dioxide, water, and energy
Term
photosynthesis
Definition
the act of taking in carbon dioxide, water, and energy and releasing oxygen and sugar
Term
conductivity
Definition
measure of dissolved solids. increased by minerals, fertilizers, road salt, acid rain, sewage. decreased by filtering these
Term
nitrite/nitrate levels
Definition
nitrogen combined with oxygen in water--necessary for plants and animals to live. increased by bacteria, sewage, animal waste; lowered as absorbed by plants
Term
eutrophication
Definition
excessive nitrates lead algae to cover the surface, killing plants underneath, resulting in decomposing algae which lower dissolved O2, killing fish and other organisms
Term
ammonia
Definition
produced by animal waste, plant decomposition, overfeeding. any level other than zero kills organisms
Term
dissolved gases vs temperature
Definition
decreasing relationship (inversely correlated)
Term
dissolved CO2 vs photosynthesis
Definition
decreasing relationship (inversely correlated)
Term
pH vs decomposition
Definition
increasing relationship (correlated)
Term
algae growth vs nitrates
Definition
increasing relationship (correlated)
Term
pH vs air pollution
Definition
decreasing relationship (inversely correlated)
Term
conductivity vs dissolved solids
Definition
increasing relationship (correlated)
Term
dissolved oxygen vs decomposers
Definition
decreasing relationship (inversely correlated)
Term
producer
Definition
a self feeding organism, creating complex organic compounds from inorganic chemical reactions or from sunlight
Term
consumer
Definition
organisms which eat other organisms
Term
decomposer
Definition
organisms which break down dead or decaying organisms--bacteria, fungi, worms, snails
Term
CO2-O2 cycle
Definition
allows carbon to be recycled and re-used...plants absorb CO2 via photosynthesis and emit oxygen. animals breath oxygen to live, and eat plants (carbon) to make tissues, exhale carbon as the breathe, and return carbon to the soil when they die...these atoms used in a new plants
Term
energy pyramid
Definition
aka the ecological pyramid, which shows biomass at each tropic level in an ecosystem
Term
nitrogen cycle
Definition
nitrification through bacteria changes N2 and ammonia into nitrates, are consumed by organisms, which when they die, release the N2
Term
water cycle
Definition
Excess water not used by plants is absorbed into the atmosphere (transpiration), collects into clouds as water vapor, eventually becomes rain (precipitation), collects into lakes and oceans as excess water
Term
the eyepiece (microscope part)
Definition
what contains the lens
Term
where you put the slide (microscope part)
Definition
stage
Term
coarse adjustment (microscope part)
Definition
used to focus first when using low power
Term
diaphragm (microscope part)
Definition
controls the light that can go through the stage
Term
base and arm (microscope part)
Definition
where you carry a microscope
Term
fine adjustment (microscope part)
Definition
used to focus when the high power objective is in place
Term
stage clips (microscope part)
Definition
used to hold the slide in place
Term
total magnification
Definition
multiplication of the magnification power of the eyepiece lens and the objective lens
Term
chloroplasts
Definition
organelles which used CO2, H2O to form sugar and give off O2
Term
elodea
Definition
a species of water plant
Term
cell wall
Definition
protects the cell from damage, provides shape and controls growth
Term
stomata
Definition
small opening which allow raw materials (gas) and products to enter and exit a cell
Term
chlorophyll
Definition
chemical found in chloroplasts that absorbs light to help produce oxygen
Term
guard cells
Definition
protect the stomata and control their size
Term
palisade layer
Definition
cell layer that does photosynthesis
Term
spongy layer
Definition
cell layer that exchanges gases
Term
leaf vein
Definition
allows water to move within a leaf
Term
word equation for photosynthesis
Definition
water+carbon dioxide+light = glucose (sugar) and oxygen
Term
reactant
Definition
the raw materials in a chemical reaction (like photosynthesis)
Term
product
Definition
the output of a chemical reaction (like photosynthesis)
Term
chemical bond
Definition
what joins atoms together
Term
glucose (chemical equation)
Definition
C6H12O6
Term
water (chemical equation)
Definition
H2O
Term
carbon dioxide (chemical equation)
Definition
CO2
Term
oxygen (chemical equation)
Definition
O2
Term
niche
Definition
a unique role played by an organism in an ecosystem
Term
competition
Definition
fighting for the best food, best mate, best nesting place, etc
Term
social hierarchy
Definition
the relative place an animal occupies in its species, based on age, gender, size, plumage, intelligence, energy use, money making potential,
Term
symbiosis
Definition
a very close relationship between two different species
Term
parasitism
Definition
a symbiotic relationship that benefits one species while harming the other
Term
commensalism
Definition
a symbiotic relationship that benefits one species while neither harming or helping the other
Term
mutualism
Definition
a symbiotic relationship where both species benefit
Term
herding
Definition
a large group of animals moving in a like way--land, air, sea
Term
territorial imperative
Definition
the need for an animal species to mark, occupy, and defend an area
Term
chemical used to indicate presence of CO2
Definition
BTB--bromothymol blue
Term
BTB changes from blue to yellow
Definition
increasing CO2
Term
BTB goes from lighter to darker blue
Definition
increasing O2
Term
mitochandrin
Definition
where cellular respiration occurs
Term
nutrients
Definition
biotic components which provide energy. Usually carbohydrates, proteins, or fats
Term
wetland
Definition
environments which combine land and water, is often flooded. acts as a filter for water
Term
succession
Definition
the predictable way an ecosystem recovers after after a disturbance like a fire, flood
Term
submerged aquatic vegetation
Definition
beds where water plants live, which need sunlight that can only be provided through clear water (filtered by oysters)
Term
keystone species
Definition
a species which is integral to an ecosystem and without which many species would die (e.g. oysters in the Chesapeake)
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